Certified Intrinsically safe, the ATEX certified oil/water interface meter is used to measure the thickness of floating or sinking hydrocarbons in groundwater accurately, safely and reliably. The easy-to-read heavy duty Kynar jacketed tape is accurate to 0.25 mm with printing beneath the jacketing to eliminate the possibility of the graduations wearing off. The interface meter has modular electronics and an easy-to-replace probe. The unit is powered by a single 9-volt battery and comes standard with a carrying case and cleaning kit.